Drywall Construction Timber Stud Cement Board Screws - PH - Countersunk Wafer - Twin-Cut - Exterior - Silver Organic

£7.26

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Twin-cut cement board screws with PH drive and countersunk wafer heads for fixing boards to timber studs. Silver organic coating resists corrosion for exterior or wet room use. Ideal for cladding, bathrooms, and sheathing boards. Fast, flush finish with excellent holding strength in timber.

Size

4.2 x 25 4.2 x 32 4.2 x 42

Quantity

200

Product variants

Delivery and Shipping

Place your order before 3pm for next working day delivery.

Please note: Additional delivery charges may apply for Northern Ireland, Isle of Wight, Isle of Man, Isles of Scilly, Scottish Highlands & Islands, and Channel Islands. We will contact you to inform you of any additional costs once your order is received, or you can call us on 0800 111 4898 beforehand to confirm.

Description

Exterior-Grade Twin-Cut Screws for Fixing Cement Boards to Timber Framework

These Drywall Construction Cement Board Screws are engineered for securely fixing fibre cement and tile backer boards to timber studs in external and wet area applications. Featuring a twin-cut thread design for fast insertion, a PH (Phillips) drive, and a countersunk wafer head, they offer a flush finish and superior holding power. The exterior-grade silver organic coating ensures corrosion resistance in exposed environments, making them ideal for cladding, facades, and bathroom installations.

Key Features & Benefits

Twin-Cut Thread: Reduces driving torque and enhances grip in timber for cleaner, faster insertion.
Countersunk Wafer Head: Provides a flat, flush finish that won't interfere with board finishes or coatings.
PH Drive: Phillips recess reduces cam-out and ensures efficient power tool compatibility.
Silver Organic Coating: Offers enhanced corrosion resistance for long-term exterior or wet area use.
Ideal for Cement Boards: Compatible with fibre cement panels, tile backers, and similar sheathing materials.

Product Details

Head Type: Countersunk Wafer
Drive Type: Phillips (PH)
Thread Type: Twin-cut, coarse thread for timber substrates
Finish: Silver Organic Coating
Application: Exterior or interior use – ideal for bathrooms, wet rooms, and façades
Compatible Materials: Timber studs, cement board, tile backer boards

Application Instructions

Position Board: Align cement board to timber frame.
Drive Screws: Use a PH bit to drive screws flush with the board surface. Pilot holes may be used in hardwoods if required.
Spacing: Follow manufacturer recommendations, typically 200–300mm screw centres.

Limitations

Not suitable for use with steel or metal framing – use self-drilling screws instead.
Ensure screw length provides adequate penetration into timber for a secure hold.